WTH is there no way to enter the bind key for LYWSD03MMC devices?

The Xiaomi BLE Integration detects the LYWSD03MMC device but never asks for the necessary bindkey. I have this problem since a year or so. Why is there no way to enter it directly when it discovers it and asks me to add it? It only asks in which room it should be added. It is a problem with the original Xiaomi firmware of the device. If i flash alternative firmware it works without the bind key but not with the Xiaomi integration but with BThome instead. Please fix this. Thanks.